The note payable that was outstanding in the beginning of the period is 2,400. Please let me know all the procedures and formulas used! Thank you

Debt a. On September 1, 2014, Harriet's paid-off the note payable that was outstanding at the beginning of the period. The note had an 8% interest rate, had been issued on September 1, 2013, and required semiannual interest payments on February 28 and August 31 Also on September 1, 2014, Hamlet's borowed $3.500 on a new note payable. The new note carries a 6% interest rate with similar payment terms as the note Harriet's just paid-off. b